Ashman and XJ4rocks,
Thanks for taking the time to answer, sincerely appreciated.
However, I think that I should give up with the over-the-knuckle type. This requires a lot of fabrication, and in this country, there aren't too many shops I could trust to do this kind of "operation" on my axle and steering.
As a side note, my dreadfull steering problems seem to be cured. Believe it or not, the reason was the TRE at the end of Rusty's trackbar. Last Friday, I replaced that with the bushing end and the appropriate mount, and did an alignment job as well. The truck now feels very solid and the steering is much more precise. There is a barely noticeable tendency to wander, which might be due to one of the ball joints, I'll have to replace that one I guess. And my caster is only 6 degrees (I wanted to make sure it didn't create any problems with my pinion angle), so I think the steering will be more improved, if I take that to 7.
As for a steering improvement, I am leaning towards Zion Dunn's solution (you may check it out at
http://www.xjworld.4wdriver.com/
, I think it can be made at a very reasonable cost (Zion is willing to make one for me, I do not have access to any fabrication equipment, nor to such parts) and it is a bolt-on replacement of the original setup.
Again, many thanks and kind regards